Hair drier



A. FODOR Jan. 9, 1951 HAIR DRIER Filed Aug. 23, 1949 INVENTOR An'rul Fodbr,Deceosed, By Jeanne Blonctle' Fodor, Administrqirix ATTORA/E).

Patented Jan. 9, 1951 UNITED. STATES PATENT OFFICE HAIR, DRIER Antal Fodor, deceased, late of New York, N. Y., by

Jeanne Blanche Fodor, administratrix, New York, N. Y., assignor to American Thermo-Tech Corporation, New York, N. Y.

Application August 23,1949, Serial No. 111,886

1 This invention relates to space'heaters in general; similar to that disclosed in pending applicationSerial No. 26,777, filed May 13, 1948, matured into Patent No. 2,501,812, issued March 28, 1950,

but particularly deals with directional heaters such as hair driers;

.The principal object of the present invention is the provision of a rather inexpensive, simple, safe and easily operable device of that kind, which, without the use of mechanical means, such as fans or blowers, will produce a rapid flow of heated air in any desired direction.

Another object of this invention'is to provide a hair drier comprising an electrically heated appliance, wherein air heated 'by radiation is converted into a high velocity current of heated air,

Fig. 2 is a vertical section taken approximately along line 2--2 of Fig. 1; and

f r'ii is a front elevation of the hair drier propenpartly in section.

iIn-Fig. 1 there is illustrated a hollow base III, containing a coiled electric cord II, which latter 7 is preferably automatically wound u by spring means; not shown, similar in principle to the winding up of a flexible measuring tape. Extending from base I is a tubular member l2 in which is telescopingly and adjustably mounted another tubular member I3, the latter being held at any desired height by a thumb screw M. Member l3 supports by means of disk l3 the electric hair drier generally indicated at IS. The hair drier 7 comprises an electric heatingelement |6 which is enclosed in a Venturi structure ll, composed of a I closed bottom 18 from which extends upwardly the lower Venturi member l9 terminating in a throat portion 20, and from which throat portion extends upwardly the upper Venturi member 2| terminating in an outlet 22. v The top portion of member 2| is preferably. curved for smoothly guiding air outwardly. The sides of the lower Venturi member l9 are provided near bottom |8 with relatively large air intake openings 23.

Venturi structure I1 is completely enclosed within and is spaced from the walls of a hull 24, the latter being provided. near outlet 22 0t 4 Claims. (Cl. 213-38) the Venturi structure, with outlet openings 25 and 26, whereas at the bottom of the hull are arranged air inlet openings 21. The upper member of hull 24 is curved similarly to the curved top portion of Venturi member 2| and for the same purpose. The Venturi structure is virtually suspended within hull 24. The entire hull 24 is again completely enclosed in and is spaced from the walls of an outer cover 28, which is preferably made of insulating material or a combination of a 7 metal structure interiorly lined with insulating matter. Outer cover 28 comprises a substantially closed, box-like design, the bottom 29 of which I is provided with a plurality of perforations 30 serving as air inlets. The top wall 3| of the cover is inclined or curved in substantially the same manner as is the upper member of hull 24 and the top portion of upper Venturi member 2|. At the upper end of the front wall of cover 28 there is provided a, single air outlet aperture 32.

The inclined upper wall ends of the cover of the hull and of the Venturi structure are all directed toward air outlet 32 of the cover.

Hingedly secured with or otherwise rendered $5 adjustable and movable in respect to top wall 3| of outer cover 28 is an extension 33 provided with hinged side shields 34, whereby heated air escaping through openings 32 may be concentrated against an object and may be guided in any desired direction. Extension 33 may be not only tilted about hinge 35 but also adjusted bodily by means of slots 36 and thumb screw 31 in respect tofouter cover 28.

Between the bottom of the outer cover and bottom I8 of Venturi structure ll there is preferably provided an insulatingmember 38 supported by a spacer 33 and serving as a heat shield for heating element l6.

Operating principle When heating element 6 is energized, air entering through the perforations 33 in bottom 29 of cover 28 and passing through openings 23 into Venturistructure |l becomes heated. The thus heated air is forced through throat 23, whereby its velocity is materially increased. Both element H; as well as the hot air heat the walls of Venturi structure H, which walls in turn heat the walls of hull 24 by radiation.

While the air heated directly byelement l6 escapes through outlet 22, fresh air is caused to enter through openings 23. In addition to the air directly heated by element It in the Venturi structure, the air between the walls of that structure and the walls of hull 24 becomes. heated also,

but to a lesser degree, and escapes through openings 25 and 26 of the hull, adjacent to opening 22 of Venturi structure l1. Still additional air is heated by the outer surfaces of the heated hull walls and passes upwardly between the hull and the insulated walls of the outer cover. All of the combined heated air currents escape through the single top opening 32 provided in the outer cover, from where they are directed by extension 33 to the best advantage.

Inasmuch as the outer cover structure is either wholly made from or is lined with insulating material, the device is perfectly safe to direct touch, so that accidental burning is prevented.

The air escaping through opening 32 is of a sui'ficient velocity that it may be effectively directed by extension 33 and shields 34, to any desired point or area.

From the above description it becomes clearly evident that the air heated both by direct contact with element 16 and by radiation within the Venturi structure and hull 241s first, so-to-speak, trapped or accumulated within outer cover 23, whereupon it issues in the form of an air current from opening 32 of the cover at a rather high velocity and at a relatively high temperature. This hot air current has proven to be most effective for rapidly drying hair or to serve as a drying appliance for other uses, without the employment of mechanical means for producing a forced air movement.

The entire hair drier is, as stated before, supported by an adjustable stanchion so that it can be raised or lowered at will. As also stated, the device is perfectly safe to touch and safe in use and most inexpensive in its structural arrange ment and its maintenance.

While only a specific form of the device is illustrated in the drawing and described in the specification, it is quite evident that changes and improvements, necessitated by specific requirements for different uses of the device, may be readily incorporated, without departing from the broad scope of this invention, as defined in the annexed claims.

What is claimed as new is:

1. Aheating device of the class indicated, comprising a substantially closed outer, insulated casingor cover provided with bottom air intakes and a single air outlet at the upper end of one of itssides, a hull within the cover, a Venturi structure within the hull, bottom air intakes, and top air outlets provided in both the hull and the Venturi structure, said top air outlets of the hull and of the Venturi, structure being directed towardthe. single air outlet of the outer casing, an electric heating element withinthe'Venturi structure, adjustable means secured to the top end of the cover for directing hot air issuing from the air outlet of the cover, and an adjustable support for the cover.

2. In a heating device of the class indicated, a substantially closed cover having a perforated bottom and a single air outlet at the upper end of the front wall of the cover, a hull within the cover but spaced from its walls, a Venturi structure suspended-within and spaced from the walls of the hull, a heating element within the Venturi structure, the upper wall portions of the Venturi structure, of the hull and of the cover being inclined and directed toward the air outlet of the cover; said Venturi structure and said hull having air intakes at their bottom and air outlets at their upper ends, said air outlets being directed toward the single air outlet of the cover; an adjustable extension in mobile association with the upper wall portion of the cover and being provided with adjustable side shields for concentrating and directing the flow of heated. air issu ing from the air outlet of the cover.

3. In a hair drier, an outer cover, a hull withiri and spaced therefrom, a Venturi structure within and substantially spaced from said hull, an electric heating element within the lower end of the Venturi, the bottom of the cover having air inlet perforations, the hull and the Venturi structure having bottom air inlets and top air outlets, said cover having a single air outlet at the top of its front wall, the upper wall portions of the Venturi structure, the hull and the cover being inclined and directed toward the air outlet of the cover, as. are also the topair outlets of the hull andthe Venturi structure, an insulating shield member arranged between the bottom of the Venturi structure and the perforated bottom of the cover, and adjustablemeans associated with the upper end of the cover for concentrating and directing a hot air current issuing from the. air outlet of the cover.

4. In a hair drier, a Venturi structure com.- pcsedof lower and upper members connected with each other at and forming a joined throat portion, the lower member; having a closed bottom and side air intakes arranged near that bottom, an electric heating element disposed within saidlower member, the upper member terminating in a single side air outlet; a hull substantially completelyenclosing and being spaced from said Venturi. structure. and having. air intakesat the.

bottom and air outlets at the topendadjacent the air outlet of the Venturi structure; a substantiallyfully closed. cover completely housing and being spaced from said: hull, thebottom of the cover having airinlet perforations, anair outlet provided at the top end of the front wall of the cover; the upper wallportions of the Venturi structure, of the hull and of the cover beinginclined-and, being directedttowardthe air out let of the cover; an insulating. shield interposed betweenthe closed bottom. of the Venturi structure and the perforated bottom of the cover; the cover having insulated walls; adjustable and bodily movablemeans for directing-andconcena trating hot air issuing from the air outlet of the cover; and anadjustable support for the coverassociated withits bottom.

JEANNE BLANCHE FODOR. Administratrixof the Estate of Antal Fodor,

Deceased.

REFERENCES CITED:

The following references are of record in the file of this patent:

UNITED STATES PA'I'ENTS Germany l June 15, 193:! 

